Log In
Or create an account ->
Imperial Library
Home
About
News
Upload
Forum
Help
Login/SignUp
Index
PRAIRIE PEAK and PLATEAU
ACKNOWLEDGMENTS
CONTENTS
ILLUSTRATIONS
Introduction
I Colorado’s Three Provinces
THE PRAIRIES
THE PEAKS
Front Range
Wet Mountains
Sangre de Cristo Range and Spanish Peaks
Park Range and Rabbit Ears Range
Gore Range
Tenmile and Mosquito Ranges
Sawatch Range
Elk Mountains and West Elk Mountains
San Juan Mountains
Uinta Mountains
THE PLATEAUS
II Geologic History of Colorado
PRECAMBRIAN ERA
PALEOZOIC ERA
Cambrian Period (500-570 million years ago)
Ordovician Period (440-500 million years ago)
Silurian Period (400-440 million years ago)
Devonian Period (350-400 million years ago)
Mississippian Period (310-350 million years ago)
Pennsylvanian Period (270-310 million years ago)
Permian Period (223-270 million years ago)
MESOZOIC ERA
Triassic Period (180-225 million years ago)
Jurassic Period (135-180 million years ago)
Cretaceous Period (70-135 million years ago)
CENOZOIC ERA
Tertiary Period (3-70 million years ago)
Quaternary Period (3 million years ago to present)
III Geology and Man in Colorado
GOLD, SILVER, AND OTHER METALS
Boulder County
Central City and Idaho Springs
Georgetown, Empire, and Silver Plume
Leadville
Breckenridge
Fairplay
Silverton
Ouray
Aspen
Creede
Cripple Creek
Climax
RADIUM, URANIUM, AND VANADIUM
OIL, NATURAL GAS, AND OIL SHALE
COAL
CONSTRUCTION MATERIALS
Sand, Gravel, and Clay
Stone
Lime and Gypsum
GEMS AND ORNAMENTAL STONES
WATER
Surface Water
Groundwater
Caves
Springs
ENVIRONMENTAL GEOLOGY
GLOSSARY
SUGGESTED READING
INDEX
Transcriber’s Notes
← Prev
Back
Next →
← Prev
Back
Next →